well i put 75w-90 in my tranny and no more gear stiking only when its freezing temp i get stiking at start ups after that no problem, i also put 75w-90 in to my lsd, mix actually 75w-85/90 and the lsd grabs pretty good again cold temp start ups lol it actually frozen and its like i have a welded lsd. After a few hund yards its ok no prob. I do put royale purpole in my engine and motul 4 my brackes/clutch, i have 2 edmit it its better that stock fluids the car it self feels more resonsive even when its hot/ i also had the uprev tune so i dont really loose power due to overheating. I do also recommend this setup so choose wisely. i am currently at 13k miles i put fluids in at around 5K hope review helps
